Home / 55,929.55-77,182.76-30,779.05

Finding the Fourth Proportional to 55,929.55, 77,182.76 and 30,779.05

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Solution

The fourth proportional to 55,929.55, 77,182.76 and 30,779.05 is: 42,475.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,929.55 : 77,182.76 = 30,779.05 : x
  2. Step 2: Convert to fraction form
    55,929.55/77,182.76 = 30,779.05/x
  3. Step 3: Cross multiply
    55,929.55x = 77,182.76 × 30,779.05
  4. Step 4: Simplify right side
    55,929.55x = 2,375,611,875.28
  5. Step 5: Solve for x
    x = 2,375,611,875.28/55,929.55
  6. Step 6: Final answer
    x = 42,475.08

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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.