Home / 85,448,312.40-128,272,001.40-51,408,094.80

Finding the Fourth Proportional to 85,448,312.40, 128,272,001.40 and 51,408,094.80

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Solution

The fourth proportional to 85,448,312.40, 128,272,001.40 and 51,408,094.80 is: 77,172,023.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,448,312.40 : 128,272,001.40 = 51,408,094.80 : x
  2. Step 2: Convert to fraction form
    85,448,312.40/128,272,001.40 = 51,408,094.80/x
  3. Step 3: Cross multiply
    85,448,312.40x = 128,272,001.40 × 51,408,094.80
  4. Step 4: Simplify right side
    85,448,312.40x = 6,594,219,208,156,933
  5. Step 5: Solve for x
    x = 6,594,219,208,156,933/85,448,312.40
  6. Step 6: Final answer
    x = 77,172,023.92

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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.