Home / 42,005,781.60-63,008,672.40-31,928,085.60

Finding the Fourth Proportional to 42,005,781.60, 63,008,672.40 and 31,928,085.60

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Solution

The fourth proportional to 42,005,781.60, 63,008,672.40 and 31,928,085.60 is: 47,892,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,005,781.60 : 63,008,672.40 = 31,928,085.60 : x
  2. Step 2: Convert to fraction form
    42,005,781.60/63,008,672.40 = 31,928,085.60/x
  3. Step 3: Cross multiply
    42,005,781.60x = 63,008,672.40 × 31,928,085.60
  4. Step 4: Simplify right side
    42,005,781.60x = 2,011,746,285,929,557.50
  5. Step 5: Solve for x
    x = 2,011,746,285,929,557.50/42,005,781.60
  6. Step 6: Final answer
    x = 47,892,128.40

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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.