Home / 71,287,895.50-98,360,432.78-40,348,064.78

Finding the Fourth Proportional to 71,287,895.50, 98,360,432.78 and 40,348,064.78

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Solution

The fourth proportional to 71,287,895.50, 98,360,432.78 and 40,348,064.78 is: 55,670,785.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,287,895.50 : 98,360,432.78 = 40,348,064.78 : x
  2. Step 2: Convert to fraction form
    71,287,895.50/98,360,432.78 = 40,348,064.78/x
  3. Step 3: Cross multiply
    71,287,895.50x = 98,360,432.78 × 40,348,064.78
  4. Step 4: Simplify right side
    71,287,895.50x = 3,968,653,113,775,328.50
  5. Step 5: Solve for x
    x = 3,968,653,113,775,328.50/71,287,895.50
  6. Step 6: Final answer
    x = 55,670,785.14

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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.