Home / 56,150.30-77,487.45-30,999.80

Finding the Fourth Proportional to 56,150.30, 77,487.45 and 30,999.80

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Solution

The fourth proportional to 56,150.30, 77,487.45 and 30,999.80 is: 42,779.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,150.30 : 77,487.45 = 30,999.80 : x
  2. Step 2: Convert to fraction form
    56,150.30/77,487.45 = 30,999.80/x
  3. Step 3: Cross multiply
    56,150.30x = 77,487.45 × 30,999.80
  4. Step 4: Simplify right side
    56,150.30x = 2,402,095,065.07
  5. Step 5: Solve for x
    x = 2,402,095,065.07/56,150.30
  6. Step 6: Final answer
    x = 42,779.74

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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.