Home / 87,903.98-121,307.78-47,617.61

Finding the Fourth Proportional to 87,903.98, 121,307.78 and 47,617.61

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Solution

The fourth proportional to 87,903.98, 121,307.78 and 47,617.61 is: 65,712.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,903.98 : 121,307.78 = 47,617.61 : x
  2. Step 2: Convert to fraction form
    87,903.98/121,307.78 = 47,617.61/x
  3. Step 3: Cross multiply
    87,903.98x = 121,307.78 × 47,617.61
  4. Step 4: Simplify right side
    87,903.98x = 5,776,386,980.32
  5. Step 5: Solve for x
    x = 5,776,386,980.32/87,903.98
  6. Step 6: Final answer
    x = 65,712.47

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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.