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Finding the Fourth Proportional to 64,685.80, 89,236.88 and 46,752.40

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Solution

The fourth proportional to 64,685.80, 89,236.88 and 46,752.40 is: 64,496.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,685.80 : 89,236.88 = 46,752.40 : x
  2. Step 2: Convert to fraction form
    64,685.80/89,236.88 = 46,752.40/x
  3. Step 3: Cross multiply
    64,685.80x = 89,236.88 × 46,752.40
  4. Step 4: Simplify right side
    64,685.80x = 4,172,038,308.51
  5. Step 5: Solve for x
    x = 4,172,038,308.51/64,685.80
  6. Step 6: Final answer
    x = 64,496.97

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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.