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Finding the Fourth Proportional to 70,907.80, 97,852.30 and 39,076.72

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Solution

The fourth proportional to 70,907.80, 97,852.30 and 39,076.72 is: 53,925.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.80 : 97,852.30 = 39,076.72 : x
  2. Step 2: Convert to fraction form
    70,907.80/97,852.30 = 39,076.72/x
  3. Step 3: Cross multiply
    70,907.80x = 97,852.30 × 39,076.72
  4. Step 4: Simplify right side
    70,907.80x = 3,823,746,928.46
  5. Step 5: Solve for x
    x = 3,823,746,928.46/70,907.80
  6. Step 6: Final answer
    x = 53,925.62

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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.