Home / 64,685.10-89,259.12-36,390.18

Finding the Fourth Proportional to 64,685.10, 89,259.12 and 36,390.18

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Solution

The fourth proportional to 64,685.10, 89,259.12 and 36,390.18 is: 50,214.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,685.10 : 89,259.12 = 36,390.18 : x
  2. Step 2: Convert to fraction form
    64,685.10/89,259.12 = 36,390.18/x
  3. Step 3: Cross multiply
    64,685.10x = 89,259.12 × 36,390.18
  4. Step 4: Simplify right side
    64,685.10x = 3,248,155,443.44
  5. Step 5: Solve for x
    x = 3,248,155,443.44/64,685.10
  6. Step 6: Final answer
    x = 50,214.89

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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.