Home / 42,258.40-63,387.60-39,666.40

Finding the Fourth Proportional to 42,258.40, 63,387.60 and 39,666.40

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Solution

The fourth proportional to 42,258.40, 63,387.60 and 39,666.40 is: 59,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,258.40 : 63,387.60 = 39,666.40 : x
  2. Step 2: Convert to fraction form
    42,258.40/63,387.60 = 39,666.40/x
  3. Step 3: Cross multiply
    42,258.40x = 63,387.60 × 39,666.40
  4. Step 4: Simplify right side
    42,258.40x = 2,514,357,896.64
  5. Step 5: Solve for x
    x = 2,514,357,896.64/42,258.40
  6. Step 6: Final answer
    x = 59,499.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.