Home / 78,726.04-108,641.22-42,916.03

Finding the Fourth Proportional to 78,726.04, 108,641.22 and 42,916.03

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Solution

The fourth proportional to 78,726.04, 108,641.22 and 42,916.03 is: 59,223.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,726.04 : 108,641.22 = 42,916.03 : x
  2. Step 2: Convert to fraction form
    78,726.04/108,641.22 = 42,916.03/x
  3. Step 3: Cross multiply
    78,726.04x = 108,641.22 × 42,916.03
  4. Step 4: Simplify right side
    78,726.04x = 4,662,449,856.76
  5. Step 5: Solve for x
    x = 4,662,449,856.76/78,726.04
  6. Step 6: Final answer
    x = 59,223.73

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1.5x scale

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.