Home / 66,018.81-91,158.30-60,981.15

Finding the Fourth Proportional to 66,018.81, 91,158.30 and 60,981.15

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Solution

The fourth proportional to 66,018.81, 91,158.30 and 60,981.15 is: 84,202.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,018.81 : 91,158.30 = 60,981.15 : x
  2. Step 2: Convert to fraction form
    66,018.81/91,158.30 = 60,981.15/x
  3. Step 3: Cross multiply
    66,018.81x = 91,158.30 × 60,981.15
  4. Step 4: Simplify right side
    66,018.81x = 5,558,937,966.05
  5. Step 5: Solve for x
    x = 5,558,937,966.05/66,018.81
  6. Step 6: Final answer
    x = 84,202.34

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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.