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Finding the Fourth Proportional to 70,920.45, 97,868.49 and 39,088.67

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Solution

The fourth proportional to 70,920.45, 97,868.49 and 39,088.67 is: 53,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,920.45 : 97,868.49 = 39,088.67 : x
  2. Step 2: Convert to fraction form
    70,920.45/97,868.49 = 39,088.67/x
  3. Step 3: Cross multiply
    70,920.45x = 97,868.49 × 39,088.67
  4. Step 4: Simplify right side
    70,920.45x = 3,825,548,619.67
  5. Step 5: Solve for x
    x = 3,825,548,619.67/70,920.45
  6. Step 6: Final answer
    x = 53,941.40

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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.