Home / 77,279,875.88-115,919,223.32-19,772,054.78

Finding the Fourth Proportional to 77,279,875.88, 115,919,223.32 and 19,772,054.78

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Solution

The fourth proportional to 77,279,875.88, 115,919,223.32 and 19,772,054.78 is: 29,657,931.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279,875.88 : 115,919,223.32 = 19,772,054.78 : x
  2. Step 2: Convert to fraction form
    77,279,875.88/115,919,223.32 = 19,772,054.78/x
  3. Step 3: Cross multiply
    77,279,875.88x = 115,919,223.32 × 19,772,054.78
  4. Step 4: Simplify right side
    77,279,875.88x = 2,291,961,232,859,637
  5. Step 5: Solve for x
    x = 2,291,961,232,859,637/77,279,875.88
  6. Step 6: Final answer
    x = 29,657,931.08

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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.