Home / 77,278,639.74-106,647,080.40-42,472,563.90

Finding the Fourth Proportional to 77,278,639.74, 106,647,080.40 and 42,472,563.90

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Solution

The fourth proportional to 77,278,639.74, 106,647,080.40 and 42,472,563.90 is: 58,613,543.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,278,639.74 : 106,647,080.40 = 42,472,563.90 : x
  2. Step 2: Convert to fraction form
    77,278,639.74/106,647,080.40 = 42,472,563.90/x
  3. Step 3: Cross multiply
    77,278,639.74x = 106,647,080.40 × 42,472,563.90
  4. Step 4: Simplify right side
    77,278,639.74x = 4,529,574,937,037,438
  5. Step 5: Solve for x
    x = 4,529,574,937,037,438/77,278,639.74
  6. Step 6: Final answer
    x = 58,613,543.82

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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.