Home / 80,877,808.40-121,316,712.60-77,098,672.40

Finding the Fourth Proportional to 80,877,808.40, 121,316,712.60 and 77,098,672.40

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Solution

The fourth proportional to 80,877,808.40, 121,316,712.60 and 77,098,672.40 is: 115,648,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,877,808.40 : 121,316,712.60 = 77,098,672.40 : x
  2. Step 2: Convert to fraction form
    80,877,808.40/121,316,712.60 = 77,098,672.40/x
  3. Step 3: Cross multiply
    80,877,808.40x = 121,316,712.60 × 77,098,672.40
  4. Step 4: Simplify right side
    80,877,808.40x = 9,353,357,481,392,352
  5. Step 5: Solve for x
    x = 9,353,357,481,392,352/80,877,808.40
  6. Step 6: Final answer
    x = 115,648,008.60

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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.