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Finding the Fourth Proportional to 65,779.74, 90,753.75 and 37,465.38

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Solution

The fourth proportional to 65,779.74, 90,753.75 and 37,465.38 is: 51,689.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,779.74 : 90,753.75 = 37,465.38 : x
  2. Step 2: Convert to fraction form
    65,779.74/90,753.75 = 37,465.38/x
  3. Step 3: Cross multiply
    65,779.74x = 90,753.75 × 37,465.38
  4. Step 4: Simplify right side
    65,779.74x = 3,400,123,730.18
  5. Step 5: Solve for x
    x = 3,400,123,730.18/65,779.74
  6. Step 6: Final answer
    x = 51,689.53

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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.