Home / 78,421.58-108,221.64-44,430.02

Finding the Fourth Proportional to 78,421.58, 108,221.64 and 44,430.02

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Solution

The fourth proportional to 78,421.58, 108,221.64 and 44,430.02 is: 61,313.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,421.58 : 108,221.64 = 44,430.02 : x
  2. Step 2: Convert to fraction form
    78,421.58/108,221.64 = 44,430.02/x
  3. Step 3: Cross multiply
    78,421.58x = 108,221.64 × 44,430.02
  4. Step 4: Simplify right side
    78,421.58x = 4,808,289,629.63
  5. Step 5: Solve for x
    x = 4,808,289,629.63/78,421.58
  6. Step 6: Final answer
    x = 61,313.35

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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.