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Finding the Fourth Proportional to 70,486.08, 97,160.40 and 53,422.08

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Solution

The fourth proportional to 70,486.08, 97,160.40 and 53,422.08 is: 73,638.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,486.08 : 97,160.40 = 53,422.08 : x
  2. Step 2: Convert to fraction form
    70,486.08/97,160.40 = 53,422.08/x
  3. Step 3: Cross multiply
    70,486.08x = 97,160.40 × 53,422.08
  4. Step 4: Simplify right side
    70,486.08x = 5,190,510,661.63
  5. Step 5: Solve for x
    x = 5,190,510,661.63/70,486.08
  6. Step 6: Final answer
    x = 73,638.80

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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.