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Finding the Fourth Proportional to 93,090.90, 128,461.64 and 50,649.48

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Solution

The fourth proportional to 93,090.90, 128,461.64 and 50,649.48 is: 69,894.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,090.90 : 128,461.64 = 50,649.48 : x
  2. Step 2: Convert to fraction form
    93,090.90/128,461.64 = 50,649.48/x
  3. Step 3: Cross multiply
    93,090.90x = 128,461.64 × 50,649.48
  4. Step 4: Simplify right side
    93,090.90x = 6,506,515,265.95
  5. Step 5: Solve for x
    x = 6,506,515,265.95/93,090.90
  6. Step 6: Final answer
    x = 69,894.21

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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.