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Finding the Fourth Proportional to 64,730.64, 89,316.36 and 36,430.32

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Solution

The fourth proportional to 64,730.64, 89,316.36 and 36,430.32 is: 50,267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,730.64 : 89,316.36 = 36,430.32 : x
  2. Step 2: Convert to fraction form
    64,730.64/89,316.36 = 36,430.32/x
  3. Step 3: Cross multiply
    64,730.64x = 89,316.36 × 36,430.32
  4. Step 4: Simplify right side
    64,730.64x = 3,253,823,576.04
  5. Step 5: Solve for x
    x = 3,253,823,576.04/64,730.64
  6. Step 6: Final answer
    x = 50,267.13

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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.