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Finding the Fourth Proportional to 61,990, 93,322.36 and 56,478.76

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Solution

The fourth proportional to 61,990, 93,322.36 and 56,478.76 is: 85,025.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,990 : 93,322.36 = 56,478.76 : x
  2. Step 2: Convert to fraction form
    61,990/93,322.36 = 56,478.76/x
  3. Step 3: Cross multiply
    61,990x = 93,322.36 × 56,478.76
  4. Step 4: Simplify right side
    61,990x = 5,270,731,173.07
  5. Step 5: Solve for x
    x = 5,270,731,173.07/61,990
  6. Step 6: Final answer
    x = 85,025.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.