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Finding the Fourth Proportional to 61,888.76, 85,408.40 and 36,390.52

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Solution

The fourth proportional to 61,888.76, 85,408.40 and 36,390.52 is: 50,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,888.76 : 85,408.40 = 36,390.52 : x
  2. Step 2: Convert to fraction form
    61,888.76/85,408.40 = 36,390.52/x
  3. Step 3: Cross multiply
    61,888.76x = 85,408.40 × 36,390.52
  4. Step 4: Simplify right side
    61,888.76x = 3,108,056,088.37
  5. Step 5: Solve for x
    x = 3,108,056,088.37/61,888.76
  6. Step 6: Final answer
    x = 50,220.04

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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.