Home / 78,862,636.81-108,834,617.16-47,510,555.28

Finding the Fourth Proportional to 78,862,636.81, 108,834,617.16 and 47,510,555.28

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Solution

The fourth proportional to 78,862,636.81, 108,834,617.16 and 47,510,555.28 is: 65,567,083.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,862,636.81 : 108,834,617.16 = 47,510,555.28 : x
  2. Step 2: Convert to fraction form
    78,862,636.81/108,834,617.16 = 47,510,555.28/x
  3. Step 3: Cross multiply
    78,862,636.81x = 108,834,617.16 × 47,510,555.28
  4. Step 4: Simplify right side
    78,862,636.81x = 5,170,793,094,413,643
  5. Step 5: Solve for x
    x = 5,170,793,094,413,643/78,862,636.81
  6. Step 6: Final answer
    x = 65,567,083.52

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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.