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Finding the Fourth Proportional to 64,305.90, 88,746.84 and 38,818.51

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Solution

The fourth proportional to 64,305.90, 88,746.84 and 38,818.51 is: 53,572.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,305.90 : 88,746.84 = 38,818.51 : x
  2. Step 2: Convert to fraction form
    64,305.90/88,746.84 = 38,818.51/x
  3. Step 3: Cross multiply
    64,305.90x = 88,746.84 × 38,818.51
  4. Step 4: Simplify right side
    64,305.90x = 3,445,019,874.14
  5. Step 5: Solve for x
    x = 3,445,019,874.14/64,305.90
  6. Step 6: Final answer
    x = 53,572.38

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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.