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Finding the Fourth Proportional to 60,752.30, 91,128.45 and 21,313.40

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Solution

The fourth proportional to 60,752.30, 91,128.45 and 21,313.40 is: 31,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,752.30 : 91,128.45 = 21,313.40 : x
  2. Step 2: Convert to fraction form
    60,752.30/91,128.45 = 21,313.40/x
  3. Step 3: Cross multiply
    60,752.30x = 91,128.45 × 21,313.40
  4. Step 4: Simplify right side
    60,752.30x = 1,942,257,106.23
  5. Step 5: Solve for x
    x = 1,942,257,106.23/60,752.30
  6. Step 6: Final answer
    x = 31,970.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.