Home / 42,779.12-63,742.30-38,123.60

Finding the Fourth Proportional to 42,779.12, 63,742.30 and 38,123.60

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Solution

The fourth proportional to 42,779.12, 63,742.30 and 38,123.60 is: 56,805.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.12 : 63,742.30 = 38,123.60 : x
  2. Step 2: Convert to fraction form
    42,779.12/63,742.30 = 38,123.60/x
  3. Step 3: Cross multiply
    42,779.12x = 63,742.30 × 38,123.60
  4. Step 4: Simplify right side
    42,779.12x = 2,430,085,948.28
  5. Step 5: Solve for x
    x = 2,430,085,948.28/42,779.12
  6. Step 6: Final answer
    x = 56,805.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.