Home / 85,312.08-117,666-51,318

Finding the Fourth Proportional to 85,312.08, 117,666 and 51,318

Calculator

Solution

The fourth proportional to 85,312.08, 117,666 and 51,318 is: 70,779.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,312.08 : 117,666 = 51,318 : x
  2. Step 2: Convert to fraction form
    85,312.08/117,666 = 51,318/x
  3. Step 3: Cross multiply
    85,312.08x = 117,666 × 51,318
  4. Step 4: Simplify right side
    85,312.08x = 6,038,383,788
  5. Step 5: Solve for x
    x = 6,038,383,788/85,312.08
  6. Step 6: Final answer
    x = 70,779.94

Related Problems

Find fourth proportional to 42,656.04, 58,833 and 25,659
Half scale
Find fourth proportional to 170,624.16, 235,332 and 102,636
Double scale
Find fourth proportional to 85,313.08, 117,667.38 and 51,319
Similar ratio
Find fourth proportional to 127,968.12, 176,499 and 76,977
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.