Home / 85,904.64-128,860.80-23,575.68

Finding the Fourth Proportional to 85,904.64, 128,860.80 and 23,575.68

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Solution

The fourth proportional to 85,904.64, 128,860.80 and 23,575.68 is: 35,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,904.64 : 128,860.80 = 23,575.68 : x
  2. Step 2: Convert to fraction form
    85,904.64/128,860.80 = 23,575.68/x
  3. Step 3: Cross multiply
    85,904.64x = 128,860.80 × 23,575.68
  4. Step 4: Simplify right side
    85,904.64x = 3,037,980,985.34
  5. Step 5: Solve for x
    x = 3,037,980,985.34/85,904.64
  6. Step 6: Final answer
    x = 35,364.57

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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.