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Finding the Fourth Proportional to 70,870.16, 97,801.32 and 40,656.80

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Solution

The fourth proportional to 70,870.16, 97,801.32 and 40,656.80 is: 56,106.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,870.16 : 97,801.32 = 40,656.80 : x
  2. Step 2: Convert to fraction form
    70,870.16/97,801.32 = 40,656.80/x
  3. Step 3: Cross multiply
    70,870.16x = 97,801.32 × 40,656.80
  4. Step 4: Simplify right side
    70,870.16x = 3,976,288,706.98
  5. Step 5: Solve for x
    x = 3,976,288,706.98/70,870.16
  6. Step 6: Final answer
    x = 56,106.67

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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.