Home / 109,055.32-163,516-42,417.78

Finding the Fourth Proportional to 109,055.32, 163,516 and 42,417.78

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Solution

The fourth proportional to 109,055.32, 163,516 and 42,417.78 is: 63,600.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,055.32 : 163,516 = 42,417.78 : x
  2. Step 2: Convert to fraction form
    109,055.32/163,516 = 42,417.78/x
  3. Step 3: Cross multiply
    109,055.32x = 163,516 × 42,417.78
  4. Step 4: Simplify right side
    109,055.32x = 6,935,985,714.48
  5. Step 5: Solve for x
    x = 6,935,985,714.48/109,055.32
  6. Step 6: Final answer
    x = 63,600.62

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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.