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Finding the Fourth Proportional to 64,312.78, 88,766.40 and 42,803.44

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Solution

The fourth proportional to 64,312.78, 88,766.40 and 42,803.44 is: 59,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,312.78 : 88,766.40 = 42,803.44 : x
  2. Step 2: Convert to fraction form
    64,312.78/88,766.40 = 42,803.44/x
  3. Step 3: Cross multiply
    64,312.78x = 88,766.40 × 42,803.44
  4. Step 4: Simplify right side
    64,312.78x = 3,799,507,626.26
  5. Step 5: Solve for x
    x = 3,799,507,626.26/64,312.78
  6. Step 6: Final answer
    x = 59,078.58

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1.5x scale

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.