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Finding the Fourth Proportional to 58,280.40, 87,420.60 and 57,308.40

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Solution

The fourth proportional to 58,280.40, 87,420.60 and 57,308.40 is: 85,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,280.40 : 87,420.60 = 57,308.40 : x
  2. Step 2: Convert to fraction form
    58,280.40/87,420.60 = 57,308.40/x
  3. Step 3: Cross multiply
    58,280.40x = 87,420.60 × 57,308.40
  4. Step 4: Simplify right side
    58,280.40x = 5,009,934,713.04
  5. Step 5: Solve for x
    x = 5,009,934,713.04/58,280.40
  6. Step 6: Final answer
    x = 85,962.60

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1.5x scale

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.