Home / 77,749,691.32-116,744,394.30-65,776,478.68

Finding the Fourth Proportional to 77,749,691.32, 116,744,394.30 and 65,776,478.68

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Solution

The fourth proportional to 77,749,691.32, 116,744,394.30 and 65,776,478.68 is: 98,766,117.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,749,691.32 : 116,744,394.30 = 65,776,478.68 : x
  2. Step 2: Convert to fraction form
    77,749,691.32/116,744,394.30 = 65,776,478.68/x
  3. Step 3: Cross multiply
    77,749,691.32x = 116,744,394.30 × 65,776,478.68
  4. Step 4: Simplify right side
    77,749,691.32x = 7,679,035,162,683,463
  5. Step 5: Solve for x
    x = 7,679,035,162,683,463/77,749,691.32
  6. Step 6: Final answer
    x = 98,766,117.68

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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.