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Finding the Fourth Proportional to 59,345.70, 89,030.70 and 19,931.10

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Solution

The fourth proportional to 59,345.70, 89,030.70 and 19,931.10 is: 29,900.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,345.70 : 89,030.70 = 19,931.10 : x
  2. Step 2: Convert to fraction form
    59,345.70/89,030.70 = 19,931.10/x
  3. Step 3: Cross multiply
    59,345.70x = 89,030.70 × 19,931.10
  4. Step 4: Simplify right side
    59,345.70x = 1,774,479,784.77
  5. Step 5: Solve for x
    x = 1,774,479,784.77/59,345.70
  6. Step 6: Final answer
    x = 29,900.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.