Home / 89,075.20-133,396.80-47,430.40

Finding the Fourth Proportional to 89,075.20, 133,396.80 and 47,430.40

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Solution

The fourth proportional to 89,075.20, 133,396.80 and 47,430.40 is: 71,030.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,075.20 : 133,396.80 = 47,430.40 : x
  2. Step 2: Convert to fraction form
    89,075.20/133,396.80 = 47,430.40/x
  3. Step 3: Cross multiply
    89,075.20x = 133,396.80 × 47,430.40
  4. Step 4: Simplify right side
    89,075.20x = 6,327,063,582.72
  5. Step 5: Solve for x
    x = 6,327,063,582.72/89,075.20
  6. Step 6: Final answer
    x = 71,030.59

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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.