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Finding the Fourth Proportional to 70,883.87, 97,833.91 and 40,689.61

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Solution

The fourth proportional to 70,883.87, 97,833.91 and 40,689.61 is: 56,159.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,883.87 : 97,833.91 = 40,689.61 : x
  2. Step 2: Convert to fraction form
    70,883.87/97,833.91 = 40,689.61/x
  3. Step 3: Cross multiply
    70,883.87x = 97,833.91 × 40,689.61
  4. Step 4: Simplify right side
    70,883.87x = 3,980,823,153.51
  5. Step 5: Solve for x
    x = 3,980,823,153.51/70,883.87
  6. Step 6: Final answer
    x = 56,159.79

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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.