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Finding the Fourth Proportional to 64,689.48, 89,271.10 and 36,395.32

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Solution

The fourth proportional to 64,689.48, 89,271.10 and 36,395.32 is: 50,225.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,689.48 : 89,271.10 = 36,395.32 : x
  2. Step 2: Convert to fraction form
    64,689.48/89,271.10 = 36,395.32/x
  3. Step 3: Cross multiply
    64,689.48x = 89,271.10 × 36,395.32
  4. Step 4: Simplify right side
    64,689.48x = 3,249,050,251.25
  5. Step 5: Solve for x
    x = 3,249,050,251.25/64,689.48
  6. Step 6: Final answer
    x = 50,225.33

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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.