Home / 71,342,400-98,449,217.28-40,402,790.76

Finding the Fourth Proportional to 71,342,400, 98,449,217.28 and 40,402,790.76

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Solution

The fourth proportional to 71,342,400, 98,449,217.28 and 40,402,790.76 is: 55,753,985.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,342,400 : 98,449,217.28 = 40,402,790.76 : x
  2. Step 2: Convert to fraction form
    71,342,400/98,449,217.28 = 40,402,790.76/x
  3. Step 3: Cross multiply
    71,342,400x = 98,449,217.28 × 40,402,790.76
  4. Step 4: Simplify right side
    71,342,400x = 3,977,623,126,249,616
  5. Step 5: Solve for x
    x = 3,977,623,126,249,616/71,342,400
  6. Step 6: Final answer
    x = 55,753,985.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.