Home / 80,762,428.90-121,143,643.35-72,700,272.10

Finding the Fourth Proportional to 80,762,428.90, 121,143,643.35 and 72,700,272.10

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Solution

The fourth proportional to 80,762,428.90, 121,143,643.35 and 72,700,272.10 is: 109,050,408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,762,428.90 : 121,143,643.35 = 72,700,272.10 : x
  2. Step 2: Convert to fraction form
    80,762,428.90/121,143,643.35 = 72,700,272.10/x
  3. Step 3: Cross multiply
    80,762,428.90x = 121,143,643.35 × 72,700,272.10
  4. Step 4: Simplify right side
    80,762,428.90x = 8,807,175,834,730,354
  5. Step 5: Solve for x
    x = 8,807,175,834,730,354/80,762,428.90
  6. Step 6: Final answer
    x = 109,050,408.15

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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.