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Finding the Fourth Proportional to 70,830.80, 97,730.68 and 59,391.98

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Solution

The fourth proportional to 70,830.80, 97,730.68 and 59,391.98 is: 81,947.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,830.80 : 97,730.68 = 59,391.98 : x
  2. Step 2: Convert to fraction form
    70,830.80/97,730.68 = 59,391.98/x
  3. Step 3: Cross multiply
    70,830.80x = 97,730.68 × 59,391.98
  4. Step 4: Simplify right side
    70,830.80x = 5,804,417,990.76
  5. Step 5: Solve for x
    x = 5,804,417,990.76/70,830.80
  6. Step 6: Final answer
    x = 81,947.66

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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.