Home / 76,636,934.10-115,006,173.12-42,117,442.74

Finding the Fourth Proportional to 76,636,934.10, 115,006,173.12 and 42,117,442.74

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Solution

The fourth proportional to 76,636,934.10, 115,006,173.12 and 42,117,442.74 is: 63,204,066.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,636,934.10 : 115,006,173.12 = 42,117,442.74 : x
  2. Step 2: Convert to fraction form
    76,636,934.10/115,006,173.12 = 42,117,442.74/x
  3. Step 3: Cross multiply
    76,636,934.10x = 115,006,173.12 × 42,117,442.74
  4. Step 4: Simplify right side
    76,636,934.10x = 4,843,765,911,128,128
  5. Step 5: Solve for x
    x = 4,843,765,911,128,128/76,636,934.10
  6. Step 6: Final answer
    x = 63,204,066.92

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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.