Home / 71,390.04-98,518.08-39,558.60

Finding the Fourth Proportional to 71,390.04, 98,518.08 and 39,558.60

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Solution

The fourth proportional to 71,390.04, 98,518.08 and 39,558.60 is: 54,590.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,390.04 : 98,518.08 = 39,558.60 : x
  2. Step 2: Convert to fraction form
    71,390.04/98,518.08 = 39,558.60/x
  3. Step 3: Cross multiply
    71,390.04x = 98,518.08 × 39,558.60
  4. Step 4: Simplify right side
    71,390.04x = 3,897,237,319.49
  5. Step 5: Solve for x
    x = 3,897,237,319.49/71,390.04
  6. Step 6: Final answer
    x = 54,590.77

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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.