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Finding the Fourth Proportional to 70,615.50, 97,458.04 and 40,807.50

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Solution

The fourth proportional to 70,615.50, 97,458.04 and 40,807.50 is: 56,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,615.50 : 97,458.04 = 40,807.50 : x
  2. Step 2: Convert to fraction form
    70,615.50/97,458.04 = 40,807.50/x
  3. Step 3: Cross multiply
    70,615.50x = 97,458.04 × 40,807.50
  4. Step 4: Simplify right side
    70,615.50x = 3,977,018,967.30
  5. Step 5: Solve for x
    x = 3,977,018,967.30/70,615.50
  6. Step 6: Final answer
    x = 56,319.35

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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.