Home / 64,988.28-89,689.32-36,699.12

Finding the Fourth Proportional to 64,988.28, 89,689.32 and 36,699.12

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Solution

The fourth proportional to 64,988.28, 89,689.32 and 36,699.12 is: 50,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,988.28 : 89,689.32 = 36,699.12 : x
  2. Step 2: Convert to fraction form
    64,988.28/89,689.32 = 36,699.12/x
  3. Step 3: Cross multiply
    64,988.28x = 89,689.32 × 36,699.12
  4. Step 4: Simplify right side
    64,988.28x = 3,291,519,117.40
  5. Step 5: Solve for x
    x = 3,291,519,117.40/64,988.28
  6. Step 6: Final answer
    x = 50,647.89

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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.