Home / 76,709,205.12-114,932,825.28-42,194,478.72

Finding the Fourth Proportional to 76,709,205.12, 114,932,825.28 and 42,194,478.72

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Solution

The fourth proportional to 76,709,205.12, 114,932,825.28 and 42,194,478.72 is: 63,219,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,709,205.12 : 114,932,825.28 = 42,194,478.72 : x
  2. Step 2: Convert to fraction form
    76,709,205.12/114,932,825.28 = 42,194,478.72/x
  3. Step 3: Cross multiply
    76,709,205.12x = 114,932,825.28 × 42,194,478.72
  4. Step 4: Simplify right side
    76,709,205.12x = 4,849,530,650,506,438
  5. Step 5: Solve for x
    x = 4,849,530,650,506,438/76,709,205.12
  6. Step 6: Final answer
    x = 63,219,670.22

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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.