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Finding the Fourth Proportional to 85,250.40, 127,875.60 and 48,386.40

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Solution

The fourth proportional to 85,250.40, 127,875.60 and 48,386.40 is: 72,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,250.40 : 127,875.60 = 48,386.40 : x
  2. Step 2: Convert to fraction form
    85,250.40/127,875.60 = 48,386.40/x
  3. Step 3: Cross multiply
    85,250.40x = 127,875.60 × 48,386.40
  4. Step 4: Simplify right side
    85,250.40x = 6,187,439,931.84
  5. Step 5: Solve for x
    x = 6,187,439,931.84/85,250.40
  6. Step 6: Final answer
    x = 72,579.60

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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.