Home / 105,749.50-145,947.28-61,037.50

Finding the Fourth Proportional to 105,749.50, 145,947.28 and 61,037.50

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Solution

The fourth proportional to 105,749.50, 145,947.28 and 61,037.50 is: 84,239.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,749.50 : 145,947.28 = 61,037.50 : x
  2. Step 2: Convert to fraction form
    105,749.50/145,947.28 = 61,037.50/x
  3. Step 3: Cross multiply
    105,749.50x = 145,947.28 × 61,037.50
  4. Step 4: Simplify right side
    105,749.50x = 8,908,257,103
  5. Step 5: Solve for x
    x = 8,908,257,103/105,749.50
  6. Step 6: Final answer
    x = 84,239.24

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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.