Home / 78,756,731.36-118,134,601.32-42,382,255.76

Finding the Fourth Proportional to 78,756,731.36, 118,134,601.32 and 42,382,255.76

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Solution

The fourth proportional to 78,756,731.36, 118,134,601.32 and 42,382,255.76 is: 63,573,116.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,756,731.36 : 118,134,601.32 = 42,382,255.76 : x
  2. Step 2: Convert to fraction form
    78,756,731.36/118,134,601.32 = 42,382,255.76/x
  3. Step 3: Cross multiply
    78,756,731.36x = 118,134,601.32 × 42,382,255.76
  4. Step 4: Simplify right side
    78,756,731.36x = 5,006,810,887,249,873
  5. Step 5: Solve for x
    x = 5,006,810,887,249,873/78,756,731.36
  6. Step 6: Final answer
    x = 63,573,116.87

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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.