Home / 70,947.12-97,907.69-39,117.16

Finding the Fourth Proportional to 70,947.12, 97,907.69 and 39,117.16

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Solution

The fourth proportional to 70,947.12, 97,907.69 and 39,117.16 is: 53,982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,947.12 : 97,907.69 = 39,117.16 : x
  2. Step 2: Convert to fraction form
    70,947.12/97,907.69 = 39,117.16/x
  3. Step 3: Cross multiply
    70,947.12x = 97,907.69 × 39,117.16
  4. Step 4: Simplify right side
    70,947.12x = 3,829,870,774.96
  5. Step 5: Solve for x
    x = 3,829,870,774.96/70,947.12
  6. Step 6: Final answer
    x = 53,982.05

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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.