Home / 78,903.16-118,355.76-26,312.64

Finding the Fourth Proportional to 78,903.16, 118,355.76 and 26,312.64

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Solution

The fourth proportional to 78,903.16, 118,355.76 and 26,312.64 is: 39,469.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,903.16 : 118,355.76 = 26,312.64 : x
  2. Step 2: Convert to fraction form
    78,903.16/118,355.76 = 26,312.64/x
  3. Step 3: Cross multiply
    78,903.16x = 118,355.76 × 26,312.64
  4. Step 4: Simplify right side
    78,903.16x = 3,114,252,504.81
  5. Step 5: Solve for x
    x = 3,114,252,504.81/78,903.16
  6. Step 6: Final answer
    x = 39,469.30

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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.