Home / 78,493,070.28-117,730,636.14-20,989,827.24

Finding the Fourth Proportional to 78,493,070.28, 117,730,636.14 and 20,989,827.24

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Solution

The fourth proportional to 78,493,070.28, 117,730,636.14 and 20,989,827.24 is: 31,482,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,493,070.28 : 117,730,636.14 = 20,989,827.24 : x
  2. Step 2: Convert to fraction form
    78,493,070.28/117,730,636.14 = 20,989,827.24/x
  3. Step 3: Cross multiply
    78,493,070.28x = 117,730,636.14 × 20,989,827.24
  4. Step 4: Simplify right side
    78,493,070.28x = 2,471,145,713,433,900.50
  5. Step 5: Solve for x
    x = 2,471,145,713,433,900.50/78,493,070.28
  6. Step 6: Final answer
    x = 31,482,342.39

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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.