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Finding the Fourth Proportional to 61,130.40, 91,697.76 and 19,572

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Solution

The fourth proportional to 61,130.40, 91,697.76 and 19,572 is: 29,358.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,130.40 : 91,697.76 = 19,572 : x
  2. Step 2: Convert to fraction form
    61,130.40/91,697.76 = 19,572/x
  3. Step 3: Cross multiply
    61,130.40x = 91,697.76 × 19,572
  4. Step 4: Simplify right side
    61,130.40x = 1,794,708,558.72
  5. Step 5: Solve for x
    x = 1,794,708,558.72/61,130.40
  6. Step 6: Final answer
    x = 29,358.69

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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.