Home / 80,842,025.40-121,280,752.80-39,921,068.40

Finding the Fourth Proportional to 80,842,025.40, 121,280,752.80 and 39,921,068.40

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Solution

The fourth proportional to 80,842,025.40, 121,280,752.80 and 39,921,068.40 is: 59,890,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,842,025.40 : 121,280,752.80 = 39,921,068.40 : x
  2. Step 2: Convert to fraction form
    80,842,025.40/121,280,752.80 = 39,921,068.40/x
  3. Step 3: Cross multiply
    80,842,025.40x = 121,280,752.80 × 39,921,068.40
  4. Step 4: Simplify right side
    80,842,025.40x = 4,841,657,228,132,291
  5. Step 5: Solve for x
    x = 4,841,657,228,132,291/80,842,025.40
  6. Step 6: Final answer
    x = 59,890,350.40

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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.