Home / 70,521.16-97,320.50-38,688.12

Finding the Fourth Proportional to 70,521.16, 97,320.50 and 38,688.12

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Solution

The fourth proportional to 70,521.16, 97,320.50 and 38,688.12 is: 53,390.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,521.16 : 97,320.50 = 38,688.12 : x
  2. Step 2: Convert to fraction form
    70,521.16/97,320.50 = 38,688.12/x
  3. Step 3: Cross multiply
    70,521.16x = 97,320.50 × 38,688.12
  4. Step 4: Simplify right side
    70,521.16x = 3,765,147,182.46
  5. Step 5: Solve for x
    x = 3,765,147,182.46/70,521.16
  6. Step 6: Final answer
    x = 53,390.32

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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.