Home / 72,400.61-99,916.80-40,579.76

Finding the Fourth Proportional to 72,400.61, 99,916.80 and 40,579.76

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Solution

The fourth proportional to 72,400.61, 99,916.80 and 40,579.76 is: 56,002.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400.61 : 99,916.80 = 40,579.76 : x
  2. Step 2: Convert to fraction form
    72,400.61/99,916.80 = 40,579.76/x
  3. Step 3: Cross multiply
    72,400.61x = 99,916.80 × 40,579.76
  4. Step 4: Simplify right side
    72,400.61x = 4,054,599,763.97
  5. Step 5: Solve for x
    x = 4,054,599,763.97/72,400.61
  6. Step 6: Final answer
    x = 56,002.29

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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.