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Finding the Fourth Proportional to 51,148.80, 70,502.40 and 51,148.80

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Solution

The fourth proportional to 51,148.80, 70,502.40 and 51,148.80 is: 70,502.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,148.80 : 70,502.40 = 51,148.80 : x
  2. Step 2: Convert to fraction form
    51,148.80/70,502.40 = 51,148.80/x
  3. Step 3: Cross multiply
    51,148.80x = 70,502.40 × 51,148.80
  4. Step 4: Simplify right side
    51,148.80x = 3,606,113,157.12
  5. Step 5: Solve for x
    x = 3,606,113,157.12/51,148.80
  6. Step 6: Final answer
    x = 70,502.40

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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.