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Finding the Fourth Proportional to 97,010.40, 145,438.80 and 53,234.40

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Solution

The fourth proportional to 97,010.40, 145,438.80 and 53,234.40 is: 79,809.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,010.40 : 145,438.80 = 53,234.40 : x
  2. Step 2: Convert to fraction form
    97,010.40/145,438.80 = 53,234.40/x
  3. Step 3: Cross multiply
    97,010.40x = 145,438.80 × 53,234.40
  4. Step 4: Simplify right side
    97,010.40x = 7,742,347,254.72
  5. Step 5: Solve for x
    x = 7,742,347,254.72/97,010.40
  6. Step 6: Final answer
    x = 79,809.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.